Superconducting medium-frequency induction heating furnace

Abstract

The invention relates to the technical field of heating furnaces, in particular to a superconducting medium-frequency induction heating furnace which comprises an outer shell, an assembly inner shell is fixedly mounted in the outer shell, and an assembly cavity is formed between a heat insulation inner sleeve and the assembly inner shell; a dust deposition, electricity removal and heat dissipation assembly is jointly arranged above and below the assembly cavity, the dust deposition, electricity removal and heat dissipation assembly comprises a communicating ring pipe fixedly installed on the bottom end face of the assembly inner shell, first air suction holes are formed in the outer wall of the upper edge of the communicating ring pipe, and a collecting groove is fixedly installed between the heat insulation inner sleeve and the top end of the assembly inner shell. A metal net layer is attached to the upper end face of the sponge cushion. The metal net layer is used as an electric conductor and can quickly conduct contacted static charges to the ground, so that static accumulation on dust is reduced; the net structure of the metal net layer is beneficial to dispersing dust particles, reducing contact and electrostatic attraction between the dust particles and further reducing the electrostatic effect.

Description

Technical Field

[0001] The invention relates to the technical field of heating furnaces, in particular to a superconducting medium frequency induction heating furnace. Background Art

[0002] The medium frequency induction heating furnace is a power supply device that converts the industrial frequency 50HZ AC into medium frequency (300HZ or above to 20KHZ). It uses the principle of electromagnetic induction to convert electrical energy into thermal energy to heat the metal workpiece. When the AC current passes through the induction coil, eddy currents are generated inside the workpiece, which heat up due to the metal resistance, thereby achieving heating of the workpiece.

[0003] The induction coil made of superconducting material used in the superconducting medium frequency induction heating furnace has the characteristics of low resistance and high current density, which can generate a stronger electromagnetic field and improve heating efficiency. In order to ensure the stable operation of the superconducting induction coil, an efficient cooling system must be equipped to prevent the superconducting material from losing its superconducting properties due to overheating.

[0004] In the existing technical solutions, the working principle of the superconducting medium frequency induction heating furnace is based on electromagnetic induction, that is, when alternating current passes through the induction coil, an alternating magnetic field is generated around it. If there is a conductive material in this magnetic field, such as conductive dust, eddy currents will be generated inside these materials. When the eddy current flows in the conductive dust, due to the presence of resistance, it will convert electrical energy into thermal energy, which will not only cause energy loss, but also may interfere with the normal operation of the heating furnace. In addition, eddy currents may also generate additional electromagnetic fields, further affecting the electromagnetic environment of the heating furnace. If the conductive dust accumulates to a certain extent, a conductive path may be formed, causing a short circuit in the circuit of the heating furnace. Short circuits may not only damage equipment, but also cause safety accidents such as fires. Summary of the invention

[0005] The purpose of the present invention is to provide a superconducting medium frequency induction heating furnace, in which the metal mesh layer is set as a conductor, which can quickly conduct the static charge it contacts to the ground, thereby reducing the static electricity accumulation on the dust; the mesh structure of the metal mesh layer helps to disperse the dust particles, reduce the contact and static electricity attraction between them, and help to further reduce the static electricity effect, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a superconducting medium frequency induction heating furnace, comprising an outer shell, an assembly inner shell is fixedly installed inside the outer shell, a superconducting coil is fixedly installed on the inner side wall of the assembly inner shell, a heat-insulating inner sleeve is fixedly installed on the inner side of the assembly inner shell, and an assembly cavity is formed between the heat-insulating inner sleeve and the assembly inner shell;

[0007] A dust collection, static electricity removal and heat dissipation component is provided above and below the assembly cavity, and the dust collection, static electricity removal and heat dissipation component includes a connecting circle tube fixedly installed on the bottom end face of the assembly inner shell, a first air intake hole is opened on the outer wall of the upper edge of the connecting circle tube, and a plurality of the first air intake holes are provided and distributed in a ring shape, a collecting trough is fixedly installed between the thermal insulation inner sleeve and the top of the assembly inner shell, a second air intake hole is opened on the bottom end face of the collecting trough, and a plurality of the second air intake holes are provided and distributed in a ring shape, the inner bottom end face of the collecting trough is paved with a sponge pad, and a metal mesh layer is adhered to the upper end face of the sponge pad.

[0008] Preferably, the dust collection, static removal and heat dissipation assembly also includes an air intake connecting pipe that penetrates the outer shell, is assembled with the inner wall of the inner shell and is fixedly connected with the connecting circle pipe. The bottom end surface of the collection tank is also provided with a water trough of an annular structure, and the number of the water troughs is set to two.

[0009] Preferably, a processing crucible is fixedly installed inside the insulating inner sleeve, and a thermal insulation locking assembly is provided at the upper end of the processing crucible. The thermal insulation locking assembly includes a furnace cover plunger fitly installed inside the upper end of the processing crucible, and the top end surface of the furnace cover plunger is integrally fixedly connected with a furnace cover plate.

[0010] Preferably, the thermal insulation locking assembly also includes a locking block assembly drive groove opened at the top of the inner insulating inner sleeve, a locking block is slidably installed on the side of the processing crucible close to the locking block assembly drive groove, and a locking groove matching the locking block is opened on the circumferential arc surface of the furnace cover plunger.

[0011] Preferably, the inside and outside of the assembly cavity are jointly provided with a water-cooled drive sealing assembly, and the water-cooled drive sealing assembly includes a cooling spiral tube fittedly installed on the inner side of the superconducting coil, and the bottom ends of the inner walls of the outer shell and the assembly inner shell are movably penetrated by a circulating water injection pipe that is interconnected with the cooling spiral tube.

[0012] Preferably, the water-cooled drive seal assembly further comprises a drive expansion tube fixedly mounted inside the lock block assembly drive groove, and the drive expansion tube is in communication with an output end of the cooling spiral tube.

[0013] Preferably, an assembly fitting groove is provided at the top end of the heat-insulating inner sleeve, a heat-insulating sealing tube is fixedly installed inside the assembly fitting groove, and the heat-insulating sealing tube is communicated with the output end of the driving expansion tube.

[0014] Preferably, a circulating drainage pipe is movably penetrated through the top of the inner wall of the outer shell and the assembled inner shell, and the circulating drainage pipe is connected to the thermal insulation sealing pipe.

[0015] Preferably, a heat pipe thermal conduction cooling component is provided on the outer wall of the thermal insulation inner sleeve, and the heat pipe thermal conduction cooling component includes a tube shell fixedly installed on the outer wall of the thermal insulation inner sleeve, and the number of the tube shells is multiple and distributed in a ring array, and the outer wall of the tube shell is coated with a demagnetizing coating, and air ducts are formed between adjacent tube shells, and the air ducts correspond to the first air intake holes.

[0016] Preferably, the interior of the tube shell is filled with a tube core, a steam cavity is opened inside the tube core, and one end of the tube shell away from the heat-insulating inner sleeve is in contact with the outer wall of the cooling spiral tube.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a high humidity environment in the collection tank through the absorption energy of the sponge pad. The water molecules in the air help to dissipate static electricity, thereby further improving the static elimination effect. The second air intake hole can suck the high-humidity moist air in the collection tank into the assembly cavity through the second air intake hole. When the unsaturated moist air flows in the assembly cavity, the water molecules evaporate and absorb the heat in the air, thereby reducing the air temperature. This can cooperate with the inflation of the first air intake hole to further cool the assembly cavity.

[0019] 2. The expansion energy of the thermal insulation sealing tube can fit with the lower end surface of the furnace cover plate, which can ensure the sealing of the furnace cover plate and the top of the thermal insulation inner sleeve, prevent external cold air from entering the furnace and affecting the uniformity of heating. At the same time, the coolant flowing inside the thermal insulation sealing tube absorbs a large amount of heat when moving to the furnace cover plate. At this time, the heat absorbed by the coolant can supplement the heat at the connection between the furnace cover plate and the thermal insulation inner sleeve, thereby further preventing external cold air from entering the furnace and causing uneven heating.

[0020] 3. The present invention forms an air duct between adjacent tube shells, and the air duct corresponds to the first air intake hole, so that the air circulation speed in the air duct can be accelerated through the first air intake hole. The faster air circulation speed in the air duct can more effectively take away the heat on the surface of the heat pipe and improve the efficiency of convective heat exchange. This helps to reduce the temperature of the heat pipe and maintain the stable operation of the heating furnace. The rapid air flow can also make the heat more evenly distributed between the heat pipes, reduce local overheating, and protect the various components of the heating furnace from high temperature damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is the overall structural view of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the heat-insulating inner sleeve of the present invention;

[0025] Figure 4 This is a schematic diagram of the outer end surface structure of the heat-insulating inner sleeve of the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0027] Figure 6 This is a schematic diagram of the structure of the water-cooled drive seal assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the connection between the water-cooling drive sealing component and the heat preservation locking component of the present invention;

[0029] Figure 8 This is a schematic diagram of the internal structure of the collecting tank of the present invention;

[0030] Fig. 9 This is a schematic diagram of the structure of the heat preservation locking assembly of the present invention;

[0031] Fig.10 For the present invention Fig. 9 Schematic diagram of the local enlarged structure at point B in the middle.

[0032] Description of reference numerals:

[0033] 1. Shell; 2. Insulation locking assembly; 201. Furnace cover plate; 202. Furnace cover plunger; 203. Locking groove; 204. Lock block assembly driving groove; 205. Lock block; 3. Assembly inner shell; 4. Insulation inner sleeve; 5. Dust accumulation, static removal and heat dissipation assembly; 501. Intake connecting pipe; 502. Connecting ring pipe; 503. First intake hole; 504. Collecting tank; 505. Water tank; 506. Second intake hole; 50 7. Sponge pad; 508. Metal mesh layer; 6. Water-cooled drive sealing assembly; 601. Circulating water injection pipe; 602. Cooling spiral pipe; 603. Drive expansion pipe; 604. Insulation sealing pipe; 605. Circulating drainage pipe; 7. Superconducting coil; 8. Processing crucible; 9. Heat pipe thermal cooling assembly; 901. Tube shell; 902. Tube core; 903. Steam chamber; 904. Demagnetization coating; 10. Assembly fitting groove. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides a technical solution:

[0036] See also Figure 1 , Figure 4 , Figure 5 and Figure 7 A superconducting medium frequency induction heating furnace comprises an outer shell 1, an inner shell 3 is fixedly installed inside the outer shell 1, a superconducting coil 7 is fixedly installed on the inner side wall of the inner shell 3, current leads are fixedly connected to both ends of the superconducting coil 7, a heat-insulating inner sleeve 4 is fixedly installed inside the inner shell 3, an assembly cavity is formed between the heat-insulating inner sleeve 4 and the inner shell 3, a processing crucible 8 is fixedly installed inside the heat-insulating inner sleeve 4, a heat-insulating locking assembly 2 is provided at the upper end of the processing crucible 8, and a water-cooling driving sealing assembly 6 is provided inside and outside the assembly cavity;

[0037] A dust accumulation and static dissipation assembly 5 is provided above and below the assembly cavity. The dust accumulation and static dissipation assembly 5 includes a connecting circle tube 502 fixedly installed on the bottom end surface of the assembly inner shell 3. A first air intake hole 503 is provided on the outer wall of the upper edge of the connecting circle tube 502. The first air intake holes 503 are provided in plurality and are distributed in an annular shape. A collecting groove 504 is fixedly installed between the top of the heat-insulating inner sleeve 4 and the assembly inner shell 3. A second air intake hole 506 is provided on the bottom end surface of the collecting groove 504, and the second air intake hole 506 There are multiple collection grooves 504 distributed in an annular shape, and the inner bottom end surface of the collection groove 504 is paved with a sponge pad 507, and the upper end surface of the sponge pad 507 is adhered to a metal mesh layer 508; the dust collection, static electricity removal and heat dissipation component 5 also includes an air intake connecting pipe 501 that penetrates the outer shell 1, is assembled with the inner wall of the inner shell 3 and is fixedly connected with the connecting ring pipe 502, and the bottom end surface of the collection groove 504 is also provided with a water groove 505 of an annular structure, and the number of the water grooves 505 is set to two, and the collection groove 504 can seal the top of the assembly cavity.

[0038] By adopting the above technical solution, when in use, the workpiece that needs to be forged, smelted, heat treated or welded is placed in the processing crucible 8, and the processing crucible 8 is covered and sealed by the heat preservation locking component 2. The current lead excites the superconducting coil 7 through an external power supply to heat the workpiece placed in the processing crucible 8. When the superconducting coil 7 is working, the suction connecting pipe 501 is externally connected to the suction pump. The suction pump can exhaust the inside of the connecting coil tube 502 through the suction connecting pipe 501. The first suction hole 503 opened on the end surface of the connecting coil tube 502 can exhaust the inside of the assembly cavity. The second air intake hole 506 is used to absorb air from the outside by means of negative pressure exhaust inside the assembly cavity, so that the conductive dust in the air around the superconducting medium frequency induction heating furnace can be adsorbed. The adsorbed conductive dust can be collected in the collection tank 504. When the conductive dust floats freely in the air, if it contacts the electrical components of the heating furnace, it may cause electrical faults such as short circuit and discharge, affecting the normal operation of the equipment; sucking it into the collection tank 504 can effectively reduce the occurrence of such faults. The conductive dust adheres to the surface of the equipment, which will accelerate the wear and aging of the equipment and shorten the service life of the equipment. At the same time, the conductive dust may interfere with the electromagnetic field of the heating furnace, affecting the heating effect and uniformity. Collecting it can reduce such interference, ensure the stability and continuity of the heating process, and thus improve production efficiency and product quality. The upper end surface of the inner part of the collection tank 504 is paved with a metal mesh layer 508. The metal mesh layer 508 can achieve a grounding effect through the collection tank 504, the inner shell 3 and the outer shell 1. As a conductor, the metal mesh layer 508 can quickly conduct the static charge it contacts to the ground, thereby reducing the accumulation of static electricity on the dust. The mesh structure of the metal mesh layer 508 helps to disperse the dust particles, reduce the contact and static electricity attraction between them, and help to further reduce the static electricity effect. At the same time, the metal mesh layer 508 may also have a certain blocking and capturing effect on the dust particles, thereby improving the collection efficiency of the collection tank 504. The sponge pad 507 laid below the metal mesh layer 508 inside the collecting tank 504 can filter dust, and the lower end of the sponge pad 507 is in contact with the two water tanks 505, so that the sponge pad 507 can absorb the water in the water tank 505. Water is added to the water tank 505 regularly, so that the absorption energy of the sponge pad 507 can provide a high humidity environment for the collecting tank 504, and the water molecules in the air help to dissipate static electricity, thereby further improving the static removal effect. The second air intake hole 506 is set to suck the high-humidity humid air in the collecting tank 504 into the assembly cavity through the second air intake hole 506. In this way, when the unsaturated humid air flows in the assembly cavity, the water molecules evaporate and absorb the heat in the air, thereby reducing the air temperature. This can cooperate with the exhaust of the first air intake hole 503 to further cool the assembly cavity, thereby ensuring that the superconducting coil 7 is in a suitable temperature environment during operation.

[0039] Specifically, Figure 2 , Figure 3 , Figure 6-Figure 9 As shown, the thermal insulation locking assembly 2 includes a furnace cover plunger 202 which is fitted inside the upper end of the processing crucible 8, and the top surface of the furnace cover plunger 202 is integrally fixedly connected with the furnace cover plate 201; the thermal insulation locking assembly 2 also includes a locking block assembly driving groove 204 which is opened at the top end of the inner insulating sleeve 4, and a locking block 205 is slidably installed on one side of the locking block assembly driving groove 204 close to the processing crucible 8, and a locking groove 203 which matches the locking block 205 is opened on the circumferential arc surface of the furnace cover plunger 202. The water-cooled drive sealing assembly 6 includes a cooling spiral tube 602 fittedly installed on the inner side of the superconducting coil 7, and a circulating water injection pipe 601 which is interconnected with the cooling spiral tube 602 is movably penetrated through the bottom of the inner wall of the outer shell 1 and the assembled inner shell 3; the water-cooled drive sealing assembly 6 also includes a driving expansion tube 603 fixedly installed inside the locking block assembly driving groove 204, and the output end of the driving expansion tube 603 is interconnected with the cooling spiral tube 602; an assembly fitting groove 10 is provided at the top end of the thermal insulation inner sleeve 4, and a thermal insulation sealing tube 604 is fixedly installed inside the assembly fitting groove 10, and the output end of the thermal insulation sealing tube 604 is interconnected with the driving expansion tube 603, and a circulating drainage pipe 605 is movably penetrated through the top end of the inner wall of the outer shell 1 and the assembled inner shell 3, and the circulating drainage pipe 605 and the thermal insulation sealing tube 604 are interconnected.

[0040] By adopting the above technical solution, after the workpiece to be processed is placed in the processing crucible 8, the heat preservation locking assembly 2 is covered on the processing crucible 8, and the furnace cover plunger 202 can be partially inserted into the processing crucible 8 to seal the port of the processing crucible 8. At the same time, the furnace cover plate 201 will cover the top of the heat-insulating inner sleeve 4, and the port of the processing crucible 8 is closed. When water cooling is performed, the circulating water injection pipe 601 is connected to the external cooling water pump, so that the external cooling water can be introduced into the circulating water injection pipe 601. The circulating water injection pipe 601 can input the cooling water into the cooling spiral pipe 602 by being connected with the cooling spiral pipe 602, and the outside of the cooling spiral pipe 602 is in contact with the superconducting coil 7. In this way, the heat generated by the superconducting coil 7 when working can be cooled down. At the same time, the water cooled by the cooling spiral tube 602 can flow into the driving expansion tube 603. The injection of cooling water in the driving expansion tube 603 can make the driving expansion tube 603 expand. At this time, the expanded driving expansion tube 603 can push the locking block 205 in the locking block assembly driving groove 204, so that the locking block 205 can be engaged and stuck in the locking groove 203, which can play a fixed locking effect on the furnace cover plunger 202. During the heating process, the temperature and pressure in the furnace may be high. If the lid is accidentally opened, it will not only cause the sudden release of heat and steam, but also may cause burns or other injuries to the operator. The locking fixation can ensure that the lid will not be accidentally opened during the heating process, thereby protecting the safety of the operator. At the same time, through the continuous circulation of cooling water, the liquid in the driving expansion tube 603 can flow into the heat-insulating sealing tube 604, and the heat-insulating sealing tube 604 is located in the assembly fitting groove 10 at the top of the heat-insulating inner sleeve 4. When the cooling liquid flows inside the heat-insulating sealing tube 604, the expansion energy of the heat-insulating sealing tube 604 can fit with the lower end surface of the furnace cover plate 201. In this way, the sealing between the furnace cover plate 201 and the top of the heat-insulating inner sleeve 4 can be ensured, and the external cold air can be prevented from entering the furnace and affecting the uniformity of heating. At the same time, the heat-insulating sealing tube 60 When the cooling liquid circulates inside the furnace 604 and moves to the furnace cover plate 201, it absorbs a large amount of heat. At this time, the heat absorbed by the cooling liquid can supplement the heat at the connection between the furnace cover plate 201 and the heat-insulating inner sleeve 4, thereby further preventing the problem of uneven heating caused by the entry of external cold air into the furnace. The cooling liquid circulated in the heat-insulating sealing tube 604 can be discharged through the circulating drainage pipe 605, and the circulating drainage pipe 605 is connected to the external cooling water pipe, so that the cooling water can be cooled down and reused after being discharged.

[0041] Specifically, Fig. 9 and Fig.10As shown, a heat pipe heat conduction cooling component 9 is provided on the outer wall of the thermal insulation inner sleeve 4, and the heat pipe heat conduction cooling component 9 includes a tube shell 901 fixedly mounted on the outer wall of the thermal insulation inner sleeve 4. The number of tube shells 901 is set in multiple and distributed in a ring array, and the outer wall of the tube shell 901 is coated with a demagnetization coating 904. The set demagnetization coating 904 can avoid the influence of the excitation of the superconducting coil 7 on the metal tube shell 901. An air duct is formed between adjacent tube shells 901, and the air duct corresponds to the first air intake hole 503. The interior of the tube shell 901 is filled with a tube core 902, and a steam cavity 903 is opened inside the tube core 902. The setting of the steam cavity 903 can facilitate the circulation of liquid. The tube core 902 and the steam cavity 903 are arranged in multiple groups at equal distances inside the tube shell 901, and the end of the tube shell 901 away from the thermal insulation inner sleeve 4 is in contact with the outer wall of the cooling spiral tube 602.

[0042] By adopting the above technical solution, when in use, the high temperature generated inside the processing crucible 8 can be insulated by the heat-insulating inner sleeve 4, and the heat that cannot be insulated by the heat-insulating inner sleeve 4 can be dissipated by the heat pipe heat-conducting cooling component 9. One end of the tube shell 901 is fixedly attached to the outer wall of the heat-insulating inner sleeve 4, and the inside of the tube shell 901 is evacuated into a negative pressure state. The steam chamber 903 is filled with a suitable liquid, which has a low boiling point and is easy to volatilize. A tube core 902 is fixed on the inner wall of the tube shell 901, and the tube core 902 is composed of a capillary porous material. One end of the tube shell 901 is the evaporation end, and the other end is the condensation end. When one end of the tube shell 901 is heated, the liquid in the capillary tube evaporates rapidly, and the vapor flows to the other end under a slight pressure difference, and releases heat, and recondenses into liquid. The liquid then flows back to the evaporation end along the porous material by the action of capillary force, and the cycle continues. The heat is conducted from the end of the tube shell 901 close to the insulation inner sleeve 4 to the end close to the cooling spiral tube 602. This cycle is carried out quickly, and the heat can be conducted continuously, so that the heat dissipation effect inside the device can be improved, and the heat dissipation effect of the heat pipe heat conduction cooling component 9 can be further improved by the mutual fit between the tube shell 901 and the cooling spiral tube 602. An air duct is formed between adjacent tube shells 901, and the air duct corresponds to the first air intake hole 503. In this way, the air circulation speed in the air duct can be accelerated through the first air intake hole 503. The faster the air circulation speed in the air duct, the more effectively the heat on the surface of the heat pipe can be taken away, and the efficiency of convective heat exchange can be improved. This helps reduce heat pipe temperatures and keeps the furnace running smoothly. Fast air flow also distributes heat more evenly between the heat pipes, reducing local overheating and protecting furnace components from high temperature damage.

[0043] Working principle: When in use, the workpiece that needs to be forged, smelted, heat treated or welded is placed in the processing crucible 8, and the heat preservation locking assembly 2 is covered on the processing crucible 8. At this time, the furnace cover plunger 202 can be partially inserted into the processing crucible 8 to seal the port of the processing crucible 8. At the same time, the furnace cover plate 201 will cover the top of the insulation inner sleeve 4. At this time, the port of the processing crucible 8 is closed, and the current lead excites the superconducting coil 7 through an external power supply to heat the workpiece placed in the processing crucible 8. When the superconducting coil 7 is working, the suction connecting pipe 501 is externally connected to the suction pump. The suction pump can exhaust the inside of the connecting coil tube 502 through the suction connecting pipe 501. The first suction hole 503 opened on the end face of the connecting coil tube 502 can be assembled The interior of the cavity is evacuated, and the negative pressure exhaust inside the cavity is assembled to allow the second suction hole 506 to inhale air to the outside, so that the conductive dust in the air around the superconducting medium frequency induction heating furnace can be adsorbed, and the adsorbed conductive dust can be collected in the collecting groove 504. The inner upper end surface of the collecting groove 504 is paved with a metal mesh layer 508. The metal mesh layer 508 can be grounded through the collecting groove 504, the inner shell 3 and the outer shell 1. The metal mesh layer 508, as a conductor, can quickly conduct the static charge it contacts to the ground, thereby reducing the static electricity accumulation on the dust. The sponge pad 507 laid below the metal mesh layer 508 in the collecting groove 504 can filter the dust, and the lower end of the sponge pad 507 is connected to the opened The two water troughs 505 are in contact with each other, so that the sponge pad 507 can absorb the water in the water trough 505. Water is added to the water trough 505 regularly, and the absorption energy of the sponge pad 507 can provide a high humidity environment for the collecting tank 504. The second air intake hole 506 can suck the high-humidity moist air in the collecting tank 504 into the assembly cavity through the second air intake hole 506, so that it can cooperate with the exhaust of the first air intake hole 503 to further cool the assembly cavity. When water cooling is performed, the circulating water injection pipe 601 is connected to the external cooling water pump, so that the external cooling water can be passed into the circulating water injection pipe 601, and the circulating water injection pipe 601 can input the cooling water into the In the cooling spiral tube 602, the outside of the cooling spiral tube 602 fits with the superconducting coil 7, so that the heat generated by the superconducting coil 7 when working can be cooled. At the same time, the water cooled by the cooling spiral tube 602 can flow into the driving expansion tube 603. The injection of cooling water into the driving expansion tube 603 can cause the driving expansion tube 603 itself to expand. At this time, the expanded driving expansion tube 603 can push the locking block 205 in the locking block assembly driving groove 204, so that the locking block 205 can be embedded in the locking groove 203, which can have a fixed locking effect on the furnace cover plunger 202. At the same time, through the continuous circulation of cooling water, the liquid in the driving expansion tube 603 can flow into the thermal insulation sealing tube 604.The heat-insulating sealing tube 604 is located in the assembly fitting groove 10 at the top of the heat-insulating inner sleeve 4. When coolant flows inside the heat-insulating sealing tube 604, the expansion energy of the heat-insulating sealing tube 604 can fit with the lower end surface of the furnace cover plate 201, so that the sealing of the furnace cover plate 201 and the top of the heat-insulating inner sleeve 4 can be ensured. The heat generated inside the processing crucible 8 can be insulated by the heat-insulating inner sleeve 4, and the heat that cannot be insulated by the heat-insulating inner sleeve 4 can be dissipated by the heat pipe heat-conducting cooling component 9. One end of the tube shell 901 is fixedly fitted to the outer wall of the heat-insulating inner sleeve 4. On the top, the inside of the tube shell 901 is evacuated into a negative pressure state and filled with a suitable liquid. This liquid has a low boiling point and is easy to volatilize. When one end of the tube shell 901 is heated, the liquid in the capillary evaporates rapidly, and the vapor flows to the other end under a small pressure difference, and releases heat, and re-condenses into liquid. The liquid then flows back to the evaporation end along the porous material by the action of capillary force. This cycle continues, and the heat can be continuously conducted. The mutual fit between the tube shell 901 and the cooling spiral tube 602 can further improve the heat dissipation effect of the heat pipe thermal conduction cooling component 9. An air duct is formed between adjacent tube shells 901, and the air duct corresponds to the first air intake hole 503. In this way, the air circulation speed in the air duct can be accelerated through the first air intake hole 503. The faster the air circulation speed in the air duct, the more effectively it can take away the heat on the surface of the heat pipe, and improve the efficiency of convective heat exchange. This helps to reduce the temperature of the heat pipe and maintain the stable operation of the heating furnace.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A superconducting medium frequency induction heating furnace, comprising a housing (1), characterized in that: An assembly inner shell (3) is fixedly mounted inside the outer shell (1), a superconducting coil (7) is fixedly mounted on the inner wall of the assembly inner shell (3), a heat-insulating inner sleeve (4) is fixedly mounted on the inner side of the assembly inner shell (3), and an assembly cavity is formed between the heat-insulating inner sleeve (4) and the assembly inner shell (3); A dust accumulation, static electricity removal and heat dissipation component (5) is provided above and below the assembly cavity. The dust accumulation, static electricity removal and heat dissipation component (5) comprises a connecting ring tube (502) fixedly mounted on the bottom end surface of the assembly inner shell (3). A first air intake hole (503) is provided on the outer wall of the upper edge of the connecting ring tube (502). A plurality of the first air intake holes (503) are provided and are distributed in a ring shape. A collecting trough (504) is fixedly mounted between the thermal insulation inner sleeve (4) and the top end of the assembly inner shell (3). A second air intake hole (506) is provided on the bottom end surface of the collecting trough (504). A plurality of the second air intake holes (506) are provided and are distributed in a ring shape. A sponge pad (507) is laid on the inner bottom end surface of the collecting trough (504). A metal mesh layer (508) is attached to the upper end surface of the sponge pad (507).

2. A superconducting medium frequency induction heating furnace according to claim 1, characterized in that: The dust accumulation, static electricity removal and heat dissipation assembly (5) further comprises an air intake connection pipe (501) which penetrates the outer shell (1) and is fixedly connected to the inner wall of the assembled inner shell (3) and the connecting ring pipe (502). The bottom end surface of the collecting tank (504) is also provided with a water trough (505) of an annular structure, and the number of the water troughs (505) is set to two.

3. A superconducting medium frequency induction heating furnace according to claim 1, characterized in that: A processing crucible (8) is fixedly mounted inside the heat-insulating inner sleeve (4), and a heat-insulating locking assembly (2) is provided at the upper end of the processing crucible (8). The heat-insulating locking assembly (2) comprises a furnace cover plunger (202) fitted inside the upper end of the processing crucible (8), and a furnace cover plate (201) is integrally fixedly connected to the top surface of the furnace cover plunger (202).

4. A superconducting medium frequency induction heating furnace according to claim 3, characterized in that: The heat-insulating locking assembly (2) further comprises a locking block assembly driving groove (204) provided at the top end of the heat-insulating inner sleeve (4), a locking block (205) being slidably mounted on one side of the processing crucible (8) close to the locking block assembly driving groove (204), and a locking groove (203) matching the locking block (205) being provided on the circumferential arc surface of the furnace cover plunger (202).

5. A superconducting medium frequency induction heating furnace according to claim 4, characterized in that: A water-cooled drive sealing assembly (6) is provided inside and outside the assembly cavity, and the water-cooled drive sealing assembly (6) includes a cooling spiral tube (602) fitted and installed inside the superconducting coil (7), and a circulating water injection pipe (601) that is interconnected with the cooling spiral tube (602) is movably penetrated through the bottom ends of the inner walls of the outer shell (1) and the assembly inner shell (3).

6. A superconducting medium frequency induction heating furnace according to claim 5, characterized in that: The water-cooled drive seal assembly (6) further comprises a drive expansion tube (603) fixedly mounted inside the lock block assembly drive groove (204), wherein the drive expansion tube (603) is in communication with the output end of the cooling spiral tube (602).

7. A superconducting medium frequency induction heating furnace according to claim 6, characterized in that: The top end of the heat-insulating inner sleeve (4) is provided with an assembly fitting groove (10), a heat-insulating sealing tube (604) is fixedly installed inside the assembly fitting groove (10), and the heat-insulating sealing tube (604) is connected to the output end of the driving expansion tube (603).

8. A superconducting medium frequency induction heating furnace according to claim 7, characterized in that: A circulating drainage pipe (605) is movably penetrated through the top of the inner wall of the outer shell (1) and the inner shell (3), and the circulating drainage pipe (605) is connected to the heat-insulating sealing pipe (604).

9. A superconducting medium frequency induction heating furnace according to claim 8, characterized in that: A heat pipe heat conduction cooling assembly (9) is provided on the outer wall of the heat-insulating inner sleeve (4), and the heat pipe heat conduction cooling assembly (9) comprises a tube shell (901) fixedly mounted on the outer wall of the heat-insulating inner sleeve (4), a plurality of tube shells (901) are provided and distributed in a ring array, a demagnetizing coating (904) is coated on the outer wall of the tube shell (901), an air duct is formed between adjacent tube shells (901), and the air duct corresponds to the first air intake hole (503).

10. A superconducting medium frequency induction heating furnace according to claim 9, characterized in that: The tube shell (901) is filled with a tube core (902), a steam cavity (903) is provided inside the tube core (902), and one end of the tube shell (901) away from the heat-insulating inner sleeve (4) is in contact with the outer wall of the cooling spiral tube (602).

Images